Heater and fuel-economizer.



G. G. GDOPER & H. F. RICHTER. HEATER AND FUEL BGONOMIZER.

APPLICATION FILED APR.29, 1912.

1,063,912. 19 Patented June 3,1913.

cOLUMBIA PLANounAPn CID-.WASHINOTCIN. n. c.

WlED %TATE@ PATENT @FFXQE CHARLES C. COOPER, 0}? LOS ANGELES, AND HERMANF. RICHTER, OF PASADENA, CALIFORNIA.

HEATER AND FUEL-ECONOMIZER.

Specification of Letters Patent.

i "atentcd Juuci}, 'l El 1 3.

Application filed April 29, 1912. Serial No. 694,003.

To all where it may concern Be it known that we, Cinemas 0. Coornn andlineman l lti'on'rnn, citizens ()ili' the United States, and residentsof Los Angeles and. Pasadena, respectively, in the county ot Los Angelesand State of California, have invented certain new and usefulimprovements in Heaters and .l l1ell*lconomizers, ol which the followingis a specification.

Our invention has reference to a means for utilizing fuel for cookingpurposes and it has special reterence to a heater and 't'uel eeonomizeradapted for the use el. either liquid or gaseous fuel, and so arrangedthat by the use of a single burner an economical distribution of heatmay be made.

The invention further provides a means whereby the heat may be directedto that part of the heater on which the vessel is placed for cookingpurposes, so that the vessel itselt' causes the damper to open thechannel leading to the combustion chamber.

The invention "further consists in providing a heat retaining meanswhereby heat is stored up, and the same is disseminated after the burneris extinguished.

llt still further provides a removable top for the heater body, which,when in position on the heater serves as a means tor distiributing heat;over the entire top so that cooking may take place over the entiresurface, all oil which will now be set torth in. detail.

In the drawings, Figure 'l is a top view o'l the heater with portionscut away and in section. Fig. 2 is a vertical cross section oil. theheater, on line 2 ot Fig. 1, with the top in position. Fig. 23 is avertical cross section on line 2 of Fig. 1, showing the top removed. andFig. 4t; is a vertical cross sec tion of the heater on line 4t 01 Fig.1.

In carrying out our invention we prepare, as in this instance a pair oft'rialrgularly formed top and bottom plates, the top plate 5, havingthree eireularly-torminl openings (5, and centrally on its lower side isa downwardly-projecting conical shiehl 7. The lower plate 8 hascentrally an opening 9, in which the burner, (not shown) is located, soit; will be seen that the conical. shield is directly above the burnerwhen the latter is in position. ln order to hold these plates in properrelation to each other, a metal rim 11.0, of suitable width is securedat. the margins of these plates, and held in position by means of rivetsll which pass through the margins of the plates, preterably outside otthe rim 1t), and as the plates and rim are oi thin sheet metal the wholestructure is light, compact. and easily trans ported and handled.

in the space between the two plates, 5, 8, we secure a body of asbestos,soapstone, or any other heat resisting and heat retaining material, thisbcdv o'li material l2. being held tightly against the inner side ol therim it), so that it partially surrounds each opening (3 in the top plateand terms three radiating channels '13, leading from the centralaperture t) in the bottom plate to the openings (3 in the top plate. sothat the heat is conlined to the channels. and the structure thusprovides a means whereby the heat ot the single burner is utilized forthe three openings (5.

ln order that there may be no waste ot heat when one or more ot theholes (3 should not be covered by a cooking vessel, a damper 'l-l islccated in each channel, this damper being hinged, as at 15 to the topplate. l lach damper has an arm to which is slightly curved and projectsupwardly through the opening 6, the arm and damper being in such aposition relative to each other, that when there, is no vessel on theopening the damper will be closed, but when a vessel is put over theopening the bottom of the vessel will. engage with the arm and swing thedamper up so as to make a clear conduit for the passage of the heat fromthe burner to the opening 0.

With a view of providing a heating surface tor the entire top oil? theheater body. we provide a sheet metal top or cover, which comprises aplate 17, of the same general size as the top plate which has adownturned marginal llange .18, so that it will snugly tit around themargin ol? the top plate. This cover is designed to rest on loops '15),which project up :lrom the top plate, so that the cover and top plate 5are slightly separated 'l'rom each other, thereby permitting the heatedgases to move lreely bet ween the cover and top plate, the heat, beingheld in by the marginal tlange 18. It: will be observed that; when thecover is placed in position the arms 11.6 are depressed thereby. thusopening all the dampers l l, and allowing the heated gases to trcelymove toward the three openings.

The heat retaining material surromuling the heater will conserve theheat, so that after the burner is extinguished it will continue toradiate its heat for some time.

\Vhile we show three openings 6, it is obvious that a greater number maybe pro vided by constructing the top and bottom plates accordingly.

Any suitable burner (not shown) is located in the opening 9 of thebottom plate, and the heat from the burner ascending against thedownwardly-projecting conical shield is deflected radially through thechannels 13.

What we claim as new, is:

1. In a heater, an upper and a lower plate secured together by means ofrivets, and a marginal rim, the upper plate having a plurality ofopenings for cooking vessels, and the lower plate having a central.opening for the burner, side walls of heat-retaining material, conduitsfrom the central opening in the lower plate to the openings in the upperplate formed by said plates and by side walls of heat retainingmaterial, and dampers in said conduit, each damper having an arm whichprojects up into the adjacent opening and is adapted to open the damperwhen a vessel is placed on said opening.

2. In a heater, a top plate having openings for cooking vessels, a lowerplate with a central opening for a burner, side walls of heat retainingmaterial, conduits between the plates from the central opening of thelower plate to the openings of the top plate formed by said plates andside walls of heat retaining material, and a cover slightly elevatedabove the top plate, with a down-turned marginal flange adapted to fitsnugly over the heater body.

3. In a heater, a top plate having openings for cooking vessels, a lowerplate with a central opening for a burner, side walls of heat retainingmaterial, conduits between the central opening of the lower plate andthe openings of the top plate, formed by said plates and the side wallsof heat retaining material, a damper in each conduitwith an armprojecting upwardly therefrom through the adjacent opening and adaptedto be engaged and the damper opened when a vessel is placed on theopening, and a removable cover the same size as the top plate, with adown-turned marginal flange, adapted to be placed over the top plate toengage the damper arms and swing the dampers open so the products ofcombustion may flow from the conduits into the space between the topplate and cover.

i. In a heater, a top plate having openings for the reception of cookingvessels, a bottom plate with a central opening to receive a burner, amarginal lining of heat conserving material around the heater andbetween the top and bottom plate, said heater having conduits from thecentral opening in the bot-tom plate to the openings in the top plate, adamper in each conduitprovided with an arm which normally projects upthrough the adjacent opening in the top plate, said top plate havingraised loops or projections, and a cover with a marginal flange whichfits around the heater body, and depresses the arms of the said dampers.

Signed at the city of Los Angeles county of Los Angeles State ofCalifornia, this 22d day of April 1912, in the presence of witnesses.

CILLRLES C. COOPER. HERMAN F. RICHTER.

lVitnesses EDMUND KAsoLn, J. S. Znnnn.

Copies of this patent may be obtained for five cents each, by addressingthe Commissioner of Patents, Washington, D. G.

